DTC U0156: Lost Communication With EOM: Notes

For a complete wiring diagram Refer to SYSTEM WIRING DIAGRAMS .

• When Monitored: 
  • With the ignition on 
  • Battery voltage between 10 and 16 volts 
  • IOD fuse installed 
  • FCM is configured correctly 
• Set Condition: 

  Bus messages not received from the Electronic Overhead Module (EOM) for approximately 2 to 5 seconds  .

Possible Causes 

CAN B BUS CIRCUITS OPEN OR SHORTED

DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES

FCM NOT CONFIGURED CORRECTLY

ELECTRONIC OVERHEAD MODULE POWER OR GROUND

ELECTRONIC OVERHEAD MODULE

MODULE THAT SET THIS DTC